Yeh done it already mate. I had race spec rocker cover fitted. So I have now gone back to the original rocker cover and PCV but still burns oil. The smoke is now a very pale blue and sometimes is white. I really don't understand. The only things I have in mind are worn cylinders or piston rings..? But surely this would show on a compression test.. Anyone local to Peterborough have a leak down tester..? I have one at work but unable to get it, would really like to do it tomorrow and kind of in a rush :/ Thanks.